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Related Experiment Videos

Changes in renal function and oxidative damage in methamphetamine-treated rat.

Itsuo Tokunaga1, Shin-ichi Kubo, Akiko Ishigami

  • 1Department of Forensic Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.

Legal Medicine (Tokyo, Japan)
|September 15, 2005
PubMed
Summary

Methamphetamine (MA) causes kidney damage and peroxidative injury. Immunohistochemical changes in the kidney can help diagnose MA intoxication and assess renal function.

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Area of Science:

  • Nephrology
  • Toxicology
  • Forensic Pathology

Background:

  • Methamphetamine (MA) use is associated with various health complications, including potential kidney damage.
  • Understanding the specific renal effects of MA is crucial for diagnosis and treatment.

Purpose of the Study:

  • To investigate the acute and sub-acute effects of MA on renal damage and function.
  • To determine if immunohistochemical changes in the kidney can diagnose MA intoxication.
  • To correlate renal function markers with observed immunohistochemical alterations.

Main Methods:

  • Two MA administration models were used: single high dose (acute) and repeated lower doses (sub-acute/chronic).
  • Immunohistochemistry was employed to detect cell damage markers in kidney tissue.

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  • Renal function markers, blood minerals, myoglobin, and creatinine phosphokinase (CPK) were measured.

    • Main Results:

    • Acute MA exposure (single dose) enhanced ubiquitin immunoreactivity in renal tubules, increased creatinine, decreased electrolytes (K, Ca, P), and elevated CPK.
    • Sub-acute/chronic MA exposure (repeated doses) led to increased 8-hydroxy-2'-deoxyguanosine (8-OH-dG), indicating oxidative DNA damage.
    • Findings suggest MA induces renal dysfunction possibly linked to muscle damage (CPK leakage) and oxidative stress.

    Conclusions:

    • MA intoxication can cause renal tubule damage and dysfunction, evidenced by specific immunohistochemical markers.
    • Oxidative DNA damage occurs with repeated MA administration.
    • This research provides foundational data for evaluating kidney pathology in MA-related autopsy cases.